California DMV CDL HazMat Quick Practice Test

California DMV CDL HazMat Quick Practice Test For 2026

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. When driving a vehicle with empty cargo tanks that are used to carry hazardous materials, the driver:

Can cross railroad tracks without slowing or stopping.
Needs to slow when approaching railroad tracks, but is not required to stop.
Must stop at railroad crossings before proceeding.
Should never drive over railroad tracks.

2. Good drivers consistently look ____ seconds ahead of their vehicles.

Two to three
Five to six
12 to 15
30 to 45

3. If transporting mass explosives:

The vehicle must always be placarded.
The vehicle only needs to be placarded if carrying more than 200 pounds.
The vehicle does not need to be placarded.
Only rural roads should be used.

4. During the steering box portion of the vehicle inspection test, you should not:

Ensure that the steering box is securely mounted.
Ensure that the steering box is free of leaks.
Look for missing bolts in the steering box.
Assume all cotter keys are present.

5. A clue that your shipment contains hazardous materials is that:

The shipper is in the business of firework or munition dealing.
The last shipment you picked up was labeled as hazardous.
The packaging looks damaged.

6. How do you label a package if the hazardous materials label will not fit onto the package?

Place the label on a tag securely attached to the item.
Attach a QR Code to be scanned.
Reduce the size of the HazMat label to fit it completely on the item.

7. During a cargo fire, opening the trailer doors may actually cause the fire to expand because doing so:

Allows oxygen into the trailer.
Changes the temperature of the trailer.
Provides more moisture to the trailer.

8. When approaching a curve during the on-road driving test, you must do all of the following, except:

Check traffic thoroughly in all directions.
Reduce your speed before entering the curve.
Keep your vehicle in its lane.
Steadily use the brakes throughout the curve.

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